EP2716596B1 - Reformeur - Google Patents

Reformeur Download PDF

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Publication number
EP2716596B1
EP2716596B1 EP12792000.7A EP12792000A EP2716596B1 EP 2716596 B1 EP2716596 B1 EP 2716596B1 EP 12792000 A EP12792000 A EP 12792000A EP 2716596 B1 EP2716596 B1 EP 2716596B1
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Prior art keywords
reforming
passage
layer
separation
reformer
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EP12792000.7A
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German (de)
English (en)
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EP2716596A4 (fr
EP2716596A1 (fr
Inventor
Yasunori Iwakiri
Takao Izumi
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J7/00—Apparatus for generating gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/248—Reactors comprising multiple separated flow channels
    • B01J19/249—Plate-type reactors
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
    • C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
    • C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
    • C01B3/384—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts the catalyst being continuously externally heated
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/24—Stationary reactors without moving elements inside
    • B01J2219/2401—Reactors comprising multiple separate flow channels
    • B01J2219/245—Plate-type reactors
    • B01J2219/2451—Geometry of the reactor
    • B01J2219/2453—Plates arranged in parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/24—Stationary reactors without moving elements inside
    • B01J2219/2401—Reactors comprising multiple separate flow channels
    • B01J2219/245—Plate-type reactors
    • B01J2219/2451—Geometry of the reactor
    • B01J2219/2456—Geometry of the plates
    • B01J2219/2458—Flat plates, i.e. plates which are not corrugated or otherwise structured, e.g. plates with cylindrical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/24—Stationary reactors without moving elements inside
    • B01J2219/2401—Reactors comprising multiple separate flow channels
    • B01J2219/245—Plate-type reactors
    • B01J2219/2461—Heat exchange aspects
    • B01J2219/2465—Two reactions in indirect heat exchange with each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/24—Stationary reactors without moving elements inside
    • B01J2219/2401—Reactors comprising multiple separate flow channels
    • B01J2219/245—Plate-type reactors
    • B01J2219/2474—Mixing means, e.g. fins or baffles attached to the plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/24—Stationary reactors without moving elements inside
    • B01J2219/2401—Reactors comprising multiple separate flow channels
    • B01J2219/245—Plate-type reactors
    • B01J2219/2476—Construction materials
    • B01J2219/2477—Construction materials of the catalysts
    • B01J2219/2479—Catalysts coated on the surface of plates or inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/24—Stationary reactors without moving elements inside
    • B01J2219/2401—Reactors comprising multiple separate flow channels
    • B01J2219/245—Plate-type reactors
    • B01J2219/2491—Other constructional details
    • B01J2219/2492—Assembling means
    • B01J2219/2493—Means for assembling plates together, e.g. sealing means, screws, bolts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/0266—Processes for making hydrogen or synthesis gas containing a decomposition step
    • C01B2203/0277—Processes for making hydrogen or synthesis gas containing a decomposition step containing a catalytic decomposition step
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/06—Integration with other chemical processes
    • C01B2203/066—Integration with other chemical processes with fuel cells
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/08—Methods of heating or cooling
    • C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
    • C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/08—Methods of heating or cooling
    • C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
    • C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
    • C01B2203/0822—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel the fuel containing hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/10—Catalysts for performing the hydrogen forming reactions
    • C01B2203/1005—Arrangement or shape of catalyst
    • C01B2203/1035—Catalyst coated on equipment surfaces, e.g. reactor walls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Definitions

  • the present invention relates to a reformer including a reforming layer and a heating layer stacked on each other, and particularly to a reformer configured to supply a reformed gas by heating a reforming layer through an exothermic reaction with a combustion catalyst.
  • a hydrogen-rich gas is supplied as a fuel gas, and power is generated by an electrochemical reaction of oxygen used as an oxidant with hydrogen, carbon monoxide, and hydrocarbons.
  • a method may be adopted which supplies a reformed gas obtained by reforming a liquid fuel.
  • a high-carbon organic liquid including gasoline is vaporized and gasified or a fuel gas is used as a reforming fuel.
  • the reforming is performed by introducing the reforming fuel into a reformer together with other components necessary for the reforming reaction.
  • the reforming fuel is reformed with a reforming catalyst in the reformer. Since the reforming reaction requires heat, it is important to widely supply the whole area of the reforming catalyst with heat in a right amount without excess and deficiency.
  • Patent Literature 1 discloses an example of such reformers.
  • a combustion passage and a reforming passage are disposed with a wall therebetween, and a combustion gas supplied to the combustion passage is combusted on a combustion catalyst to generate heat. This heat is conducted to a reforming catalyst in the reforming passage for a reforming reaction in the reforming layer.
  • a to-be-combusted gas is introduced separately from a combustion-assisting gas by using a pipe to a site where heat is desired to be generated in the combustion passage, so that an exothermic reaction takes place on the entire combustion catalyst.
  • Patent Literature 1 Japanese Patent Application Publication No. 2002-80203 US 2004/031592 A1 discloses a process and device for exchanging heat energy between three or more streams in a microchannel heat exchanger which can be integrated with a microchannel reactor to form an integrated microchannel processing unit. This enables the combining of a plurality of integrated microchannel devices to provide the benefits of large-scale operation.
  • the microchannel heat exchanger enables flexible heat transfer between multiple streams and total heat transfer rates of about 1 Watt or more per core unit volume expressed as W/cc.
  • An object of the present invention is to provide a reformer having a simple structure and enabling an exothermic reaction to take place widely on an entire combustion catalyst.
  • a reformer according to the present invention is formed by stacking each other a reforming layer configured to reform a reforming fuel with a reforming catalyst, and a heating layer configured to heat the reforming layer through an exothermic reaction with a combustion catalyst.
  • a gas mixture obtained by mixing a to-be-combusted gas with a combustion-assisting gas is supplied to a heating passage in the heating layer.
  • the heating passage is separated into multiple separation passages by a separation wall parallel to a wall surface coated with the combustion catalyst. The multiple separation passages respectively eject the gas mixture to different positions of the combustion catalyst.
  • Fig. 1 shows views for illustrating a structure of a reformer according to the present embodiment.
  • Fig. 1(a) is a perspective view for illustrating the entire configuration
  • Fig. 1(b) is an exploded perspective view of a reforming layer and a heating layer.
  • a reformer 1 includes reforming layers 2 each configured to reform a reforming fuel with a reforming catalyst, heating layers 3 each configured to heat the reforming layer 2 through an exothermic reaction with a combustion catalyst, the layers stacked on each other, and outer walls 4 stacked on the uppermost and lowermost layers.
  • the four reforming layers 2 and the three heating layers 3 are stacked, but the number of the layers stacked is not limited thereto.
  • the reforming layer 2 is formed by stacking each other: a metal plate 6 coated with a reforming catalyst 5; a metal frame 7 configured to define a height of a reforming passage; and a metal plate 9 having a lower surface closer to the reforming layer and coated with the reforming catalyst 5, and an upper surface closer to the heating layer and coated with a combustion catalyst 8.
  • a diffusion structure 15 is disposed on the metal plate 6 so that a reforming fuel flowing thereto can diffuse.
  • This diffusion structure 15 is, for example, fins arranged in a zigzag manner shown in Fig. 1(b) , a porous metal shown in Fig. 2 , a baffle board, or the like.
  • the heating layer 3 is formed by stacking each other: the metal plate 9 coated with the combustion catalyst 8; a first metal frame 10 configured to define part of a height of a heating passage; a first separation wall 11, which is a metal plate having a wall surface provided with an opening in a portion thereof; a second metal frame 12 configured to define part of the height of the heating passage; a second separation wall 13, which is a metal plate provided with an opening at a position different from that of the first separation wall 11; a third metal frame 14 configured to define part of the height of the heating passage; and the outer wall 4 formed from a metal plate.
  • a diffusion structure 16 is disposed on the metal plate 9 coated with the combustion catalyst 8 so that a to-be-combusted gas and a combustion-assisting gas flowing thereto can diffuse.
  • This diffusion structure 16 is, for example, the fins arranged in a zigzag manner shown in Fig. 1(b) , the porous metal shown in Fig. 2 , the baffle board, or the like.
  • heights of the first to third metal frames 10, 12, 14 configured to define the parts of the height of the heating passage are equal to a divided height of a normal heating passage, and are not to increase the height of the entire heating passage.
  • the height of each of the first to third metal frames 10, 12, 14 is approximately 0.2 mm
  • a height of the metal frame 7 defining the height of the reforming passage is approximately 0.5 mm.
  • the stacked reformer 1 according to the present embodiment can be produced by stacking each other the reforming layer 2 and the heating layer 3 having such configurations, and joining outer peripheral surfaces thereof together by welding.
  • the reformer 1 As shown in Fig. 3(a) , the reformer 1 according to the present embodiment is formed by stacking the reforming layer 2 and the heating layer 3 each other, and a reformed gas reformed by the reforming layer 2 is supplied to a fuel cell 30. Then, components remaining after a reaction by the fuel cell 30 circulate as a to-be-combusted gas to the heating layers 3.
  • Fig. 3(b) shows an enlarged sectional view of the reforming layer 2 and the heating layer 3 of the reformer 1 having the configuration as described above.
  • each of passage walls 21, 22, which are parallel walls is coated with the reforming catalyst 5; in the heating layer 3, only a passage wall 23 of passage walls 23, 24, which are parallel walls, is coated with the combustion catalyst 8.
  • the passage wall 23 is located adjacent to the reforming layer 2.
  • a gas mixture obtained by mixing a to-be-combusted gas with a combustion-assisting gas is supplied to a heating passage 25 in the heating layer 3.
  • the heating passage 25 is separated into multiple separation passages by the first and second separation walls 11, 13 parallel to the wall surface coated with the combustion catalyst 8.
  • the openings of the first separation wall 11 and the second separation wall 13 are arranged at different positions from each other in such a manner that the multiple separation passages respectively eject the gas mixture to different positions of the combustion catalyst 8.
  • an opening area of an inlet 26 through which the gas mixture flows into the heating layer 3 is set wider than an opening area of an outlet 27 through which the gas mixture flows out.
  • the present embodiment describes an example where the three separation passages are separated by the two separation walls, but the number of separation passages may be two, or may be larger than three.
  • a reforming fuel gas is supplied to the reforming passage 28, a reforming reaction takes place with the reforming catalyst 5, and a reformed gas is outputted.
  • Fig. 4(a) is an enlarged sectional view of the reforming layer 2 and the heating layer 3
  • Figs. 4(b), (c), (d) are respectively cross-sectional views taken along X-X, Y-Y, Z-Z in Fig. 4(a) .
  • the description will be given with Fig. 4 of a case where a direction in which a gas flows in the reforming layer 2 is the same as a direction in which a gas flows in the heating layer 3.
  • the two first separation wall 11 and second separation wall 13 separate the heating passage 25 in the heating layer 3 into three separation passages 31a, 31b, 31c in the order closest to the reforming layer 2.
  • a to-be-combusted gas such as hydrocarbon fuel and hydrogen and a combustion-assisting gas such as air mixed in advance flow into the heating passage 25.
  • the gas mixture thus flowed is separated and continues to flow into the three separation passages 31a, 31b, 31c.
  • the three separation passages 31a, 31b, 31c respectively eject the gas mixture to different positions of the combustion catalyst 8. For example, in Fig.
  • the separation passage 31a supplies the gas mixture to a section A of the combustion catalyst 8, the separation passage 31b ejects the gas mixture to a section B of the combustion catalyst 8, and the separation passage 31c ejects the gas mixture to a section C of the combustion catalyst 8.
  • the gas mixture flowed into the separation passage 31a comes into contact with the combustion catalyst 8 immediately after the flowing. Accordingly, heat is generated through a combustion reaction near the inlet of the heating layer 3 to heat the reforming catalyst 5 in the reforming layer 2 with the wall in between, promoting a reforming reaction near an inlet of the reforming layer 2. Meanwhile, the gas mixture flowed into the separation passages 31b, 31c does not come into contact with the combustion catalyst 8 near the inlet of the heating layer 3. Accordingly, the gas mixture further keeps flowing through the heating passage 25 without a combustion reaction.
  • the first separation wall 11 separating the separation passage 31b from the separation passage 31a comes to an end.
  • the gas mixture flowing through the separation passage 31b is ejected to the combustion catalyst 8, and a combustion reaction takes place in the section B to generate heat.
  • the second separation wall 13 separating the separation passage 31b from the separation passage 31c comes to an end.
  • the gas mixture flowing through the separation passage 31c is ejected to the combustion catalyst 8, and a combustion reaction takes place in the section C to generate heat.
  • a wall surface 32 is provided at an outlet of the separation passage 31c, thereby changing the flow of the gas mixture flowing through the separation passage 31c toward the combustion catalyst 8, and the reaction with the combustion catalyst 8 surely takes place.
  • diffusing members 33, 34 are respectively provided, and play a role of changing the flows of the gas mixtures flowing through the separation passages 31b, 31c in such a manner that the gas mixtures are guided in a direction to the combustion catalyst 8.
  • the exothermic reaction takes place in the entire heating layer 3, and a reforming fuel is reformed into a reformed gas.
  • a gas mixture obtained by mixing a to-be-combusted gas with a combustion-assisting gas is supplied to the heating passage 25; the heating passage 25 is separated into the multiple separation passages by the separation walls 11, 13; and the separation passages respectively eject the gas mixture to different positions of the combustion catalyst 8. Accordingly, with a simple structure not using a pipe or the like, an exothermic reaction can take place widely on the entire combustion catalyst 8. This makes it possible to keep a temperature optimal for a reforming reaction in a large area of the reforming layer 2, and a favorable reforming reaction can take place.
  • the diffusion structures configured to diffuse gases are provided to the reforming layer 2 and the heating layer 3. Accordingly, flowing gases are diffused, and the reactions can take place in a large area.
  • the fins 15, 16 arranged in a zigzag manner are provided as the diffusion structures. This enables efficient diffusion of flowing gases with a simple structure.
  • the porous metals are provided as the diffusion structures. Accordingly, flowing gases can be diffused more surely.
  • a reformed gas reformed by the reforming layer 2 is supplied as a fuel gas to fuel cells. Accordingly, the utilization as a reformer for fuel cells is possible.
  • Fig. 5(a) is an enlarged sectional view of the reforming layer 2 and the heating layer 3
  • Figs. 5(b), (c), (d) are respectively cross-sectional views taken along X-X, Y-Y, Z-Z in Fig. 5(a) .
  • the description will be given with Fig. 5 of a case where a direction in which a gas flows in the reforming layer 2 is a direction opposite to a direction in which a gas flows in the heating layer 3.
  • the two first separation wall 11 and second separation wall 13 separate the heating passage 25 in the heating layer 3 into the three separation passages 31a, 31b, 31c in the order closest to the reforming layer 2.
  • the heating layer 3 needs to increase the temperature of the section C located near the inlet of the reforming layer 2 so that a reforming reaction can take place the most near the inlet of the reforming layer 2 where a reforming fuel gas is supplied. For this reason, positions where the separation passages 31a, 31b, 31c eject the gas mixture need to be shifted closer toward the inlet side of the reforming passage 28 rather than the outlet side thereof.
  • a wall surface 51 is provided in such a manner that the gas mixture does not flow into the separation passage 31a for supplying a gas mixture to the section A located near the outlet of the reforming layer 2.
  • the gas mixture thus flowed is separated and continues to flow into the two separation passages 31b, 31c.
  • a larger amount of the gas mixture is introduced further into the heating passage 25.
  • the gas mixture does not flow into the section A close to the inlet of the heating layer 3, which is not coated with the combustion catalyst 8, either; accordingly, no exothermic reaction takes place there.
  • the gas mixture flowing through the separation passage 31b is ejected to the combustion catalyst 8, and a combustion reaction takes place in the section B to generate heat.
  • the second separation wall 13 comes to the end in the section C of the heating passage 25 located further than the section B, the gas mixture flowing through the separation passage 31c is ejected to the combustion catalyst 8, and a combustion reaction takes place in the section C to generate heat. This heats the reforming catalyst 5 in the reforming layer 2 with the wall in between, promoting a reforming reaction near the inlet of the reforming layer 2.
  • the gas mixture does not flow into the separation passage 31a, and only flows into the separation passages 31b, 31c. This enables the positions where the gas mixture is ejected to the combustion catalyst 8 to be shifted closer toward the inlet side of the reforming passage 28 rather than the outlet side thereof. Thereby, the temperature on the inlet side of the reforming layer 2 is increased, and the reforming reaction can be further promoted.
  • the amount of heat generated at each section of the combustion catalyst 8 on the basis of the cross-sectional area of the separation passages 31a, 31b, 31c.
  • the amount of heat generated in the section C of the combustion catalyst 8 can be set approximately double the amount of heat generated in the section B.
  • the reforming reaction of the reforming layer 2 can be further promoted.
  • the positions where the separation passages 31b, 31c eject the gas mixture are shifted closer toward the inlet side of the reforming passage 28 rather than the outlet side thereof. Accordingly, a larger amount of the gas mixture can be supplied to the inlet side of the reforming layer 2 where a large amount of heat generation is required. Thus, the reforming reaction can be promoted by increasing the temperature near the inlet of the reforming layer 2.
  • the cross-sectional areas of the separation passages 31a, 31b, 31c are set in such a manner that the cross-sectional area is larger for a separation passage ejecting the gas mixture at a position closer to the inlet side of the reforming passage 28. Accordingly, a larger amount of the gas mixture can be supplied to the inlet side of the reforming layer 2 where a large amount of heat generation is required. Thus, the reforming reaction can be promoted by increasing the temperature near the inlet of the reforming layer 2.
  • Fig. 6(a) is an enlarged sectional view of the reforming layer 2 and the heating layer 3
  • Figs. 6(b), (c), (d) are respectively cross-sectional views taken along X-X, Y-Y, Z-Z in Fig. 6(a) .
  • a separation wall 62 separates the heating passage 25 into two separation passages 63a, 63b.
  • An arrangement of these the separation passages 63a, 63b viewed from the wall surface coated with the combustion catalyst 8 is switched by a switch section 64 provided in the middle of the heating passage 25. Specifically, on an upstream side of the switch section 64, the separation passage 63a is arranged at a position in contact with the combustion catalyst 8; on a downstream side of the switch section 64, the upper and lower passages are reversed, so that the separation passage 63b is arranged at a position in contact with the combustion catalyst 8.
  • the gas mixtures flowing through the respective separation passages 63a, 63b switch the passages in a vertical direction without being mixed at the switch section 64 and continue to flow.
  • the gas mixture flowed therein comes into contact with the combustion catalyst 8, and heat is generated in the section A near the inlet of the heating layer 3 to heat the reforming catalyst 5 with the wall in between, promoting a reforming reaction near the inlet of the reforming layer 2.
  • the gas mixture flowed into the separation passage 63b does not come into contact with the combustion catalyst 8 before the switch section 64, and further keeps flowing through the heating passage 25 without a reaction. Then, at the switch section 64, the upper and lower positions of the separation passage 63a and the separation passage 63b are reversed.
  • a gas mixture flowing through the separation passage 63a on a lower side is shifted to a right side (lower side in Fig. 7 ), while a gas mixture flowing through the separation passage 63b on an upper side is shifted to a left side (upper side in Fig. 7 ).
  • the upper and lower positions are reversed.
  • the arrangement is altered such that the separation passage 63a having been located on the lower side is then on the upper side, and the separation passage 63b having been located on the upper side is then on the lower side.
  • the position where the switch section 64 is provided is preferably located closer to the inlet side of the reforming layer 2 than to the outlet side thereof.
  • the switch section 64 is disposed closer to the inlet side of the heating layer 3; when the directions in which gases flow in the reforming layer 2 and in the heating layer 3 are opposite, the switch section 64 is disposed closer to the outlet side of the heating layer 3.
  • cross-sectional areas of the separation passages 63a, 63b are preferably larger for a separation passage closer to the combustion catalyst 8 on the inlet side of the reforming passage 28.
  • the cross-sectional area of the separation passage 63a is made larger; when the directions in which gases flow in the reforming layer 2 and in the heating layer 3 are opposite, the cross-sectional area of the separation passage 63b is made larger.
  • the arrangement of the separation passages is switched in the middle of the heating passage 25. Accordingly, gas mixtures flowing through the respective separation passages are not mixed together, and this makes it possible to prevent dilution of a gas mixture yet to be reacted with a gas mixture having been subjected to a combustion reaction. Thereby, the combustion efficiency can be improved.
  • the position of switching the arrangement of the separation passages is located closer to the inlet side of the reforming passage 28 than to the outlet side thereof. Accordingly, more combustion reactions can take place on the inlet side of the reforming layer 2 where a large amount of heat generation is required. Thus, the reforming reaction can be promoted by increasing the temperature near the inlet of the reforming layer 2.
  • the cross-sectional area of a separation passage closer to the combustion catalyst 8 on the inlet side of the reforming passage 28 is set larger. Accordingly, a larger amount of the gas mixture can be supplies to the inlet side of the reforming layer 2 where a large amount of heat generation is required. Thus, the reforming reaction can be promoted by increasing the temperature near the inlet of the reforming layer 2.
  • Fig. 8 shows views for illustrating, in detail, cross-sectional structures of the reforming layers 2 and the heating layer 3.
  • a reformer 81 according to the present embodiment has a structure in which the reforming layers 2 are provided adjacent to both sides of the heating layer 3.
  • Fig. 8(b) shows an enlarged sectional view of the reforming layers 2 and the heating layer 3 of the reformer 81 having such a configuration.
  • Fig. 8(b) shows passage walls on both sides, which are parallel walls, are coated with the reforming catalyst 5; in the heating layer 3 also, passage walls on both sides, which are parallel walls, are coated with the combustion catalyst 8.
  • the heating layer 3 is separated into five separation passages 86a to 86e by four separation walls 82 to 85, and has a vertically symmetrical structure around the central separation passage 86c.
  • a gas mixture introduced into the heating layer 3 is a to-be-combusted gas and a combustion-assisting gas mixed in advance, and flows into the heating passage 25.
  • the gas mixture thus flowed is separated and continues to flow into the five separation passages 86a to 86e.
  • the gas mixtures flowed into the separation passages 86a, 86e come into contact with the combustion catalysts 8 immediately after the flowing. Accordingly, heat is generated through a combustion reaction near the inlet of the heating layer 3 to heat the reforming catalysts 5 with walls in between, promoting a reforming reaction near the inlets of the reforming layers 2.
  • the gas mixtures flowed into the separation passages 86b to 86d do not come into contact with the combustion catalysts 8 near the inlet of the heating layer 3, and further keeps flowing through the heating passage 25. Then, the separation walls 82, 85 come to ends at the central portion of the heating layer 3, the gas mixtures flowing through the separation passages 86b, 86d are ejected to the combustion catalysts 8, and heat is generated through a combustion reaction to heat the reforming catalysts 5 with the walls in between, promoting a reforming reaction at the central portions of the reforming layers 2.
  • the gas mixture flowed into the separation passage 86c keeps flowing through the heating passage 25 much further, and is ejected to the combustion catalysts 8 near the outlet of the heating layer 3 as the separation walls 83, 84 come to ends. Then, a combustion reaction takes place near the outlet of the heating layer 3 to generate heat.
  • the reforming catalysts 5 are heated with the walls in between, promoting a reforming reaction near the outlets of the reforming layers 2.
  • a gas mixture obtained by mixing a to-be-combusted gas with a combustion-assisting gas is supplied to a heating passage; the heating passage is separated into multiple separation passages by a separation wall; and the separation passages respectively eject the gas mixture to different positions of a combustion catalyst. Accordingly, with a simple structure not using a pipe or the like, an exothermic reaction can take place widely on the entire combustion catalyst. This makes it possible to keep a temperature optimal for a reforming reaction in a large area of a reforming layer, and a favorable reforming reaction can take place. Therefore, the reformer according to one embodiment of the present invention is industrially applicable.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Fuel Cell (AREA)

Claims (9)

  1. Reformeur (1) formé en empilant, l'une sur l'autre, une couche de reformage (2) configurée pour reformer un carburant de reformage avec un catalyseur de reformage (5) et une couche chauffante (3) configurée pour chauffer la couche de reformage (2) par une réaction exothermique avec un catalyseur de combustion (8), dans lequel
    le reformeur (1) est configuré pour fournir un mélange gazeux obtenu en mélangeant un gaz à brûler avec un gaz favorisant la combustion à un passage de chauffage (25) dans la couche chauffante (3),
    le passage de chauffage (25) est séparé en une pluralité de passages de séparation (31a-31c) par une paroi de séparation (11, 13) parallèle à une surface de paroi revêtue du catalyseur de combustion (8), et
    la pluralité de passages de séparation (31a-31c) est respectivement configurée pour éjecter le mélange gazeux à différentes positions du catalyseur de combustion (8).
  2. Reformeur (1) selon la revendication 1, dans lequel
    une direction de l'écoulement du carburant de reformage dans la couche de reformage (2) est une direction opposée à une direction de l'écoulement du mélange gazeux dans la couche chauffante (3), et
    les positions où la pluralité de passages de séparation (31a-31c) éjectent le mélange gazeux sont décalées de manière à se rapprocher d'un côté d'entrée d'un passage de reformage (28) dans la couche de reformage (2) plutôt que d'un côté de sortie de celui-ci.
  3. Reformeur (1) selon la revendication 1, dans lequel
    une direction de l'écoulement du carburant de reformage dans la couche de reformage (2) est une direction opposée à une direction de l'écoulement du mélange gazeux dans la couche chauffante (3), et
    les zones en coupe transversale de la pluralité de passages de séparation (31a-31c) sont définies de manière à ce que la zone en coupe transversale soit plus grande pour un passage de séparation (31c) éjectant le mélange gazeux à une position plus proche d'un côté d'entrée d'un passage de reformage (28) dans la couche de reformage (2).
  4. Reformeur (1) selon la revendication 1, dans lequel une disposition de la pluralité de passages de séparation (63a, 63b) vue depuis la surface de paroi revêtue du catalyseur de combustion (8) est commutée au milieu du passage de chauffage (25).
  5. Reformeur (1) selon la revendication 4, dans lequel une position de commutation de la disposition vue depuis la surface de paroi revêtue du catalyseur de combustion (8) est située plus proche d'un côté d'entrée d'un passage de reformage (28) dans la couche de reformage (2) que d'un côté de sortie de celui-ci.
  6. Reformeur (1) selon l'une quelconque des revendications 4 et 5, dans lequel les zones en coupe transversale de la pluralité de passages de séparation (63a, 63b) sont définies de manière à ce que la zone en coupe transversale soit plus grande pour un passage de séparation (63a) plus proche du catalyseur de combustion (8) du côté d'entrée du passage de reformage (28).
  7. Reformeur (1) selon l'une quelconque des revendications 1 à 6, dans lequel l'une quelconque de la couche de reformage (2) et de la couche chauffante (3) est munie d'une structure de diffusion (15, 16) configurée pour diffuser le gaz.
  8. Reformeur (1) selon la revendication 7, dans lequel la structure de diffusion (15, 16) est formée d'ailettes disposées en zigzag.
  9. Reformeur (1) selon la revendication 7, dans lequel la structure de diffusion est un métal poreux.
EP12792000.7A 2011-06-01 2012-04-18 Reformeur Active EP2716596B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011123128 2011-06-01
PCT/JP2012/060439 WO2012165077A1 (fr) 2011-06-01 2012-04-18 Reformeur

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EP2716596A1 EP2716596A1 (fr) 2014-04-09
EP2716596A4 EP2716596A4 (fr) 2014-11-05
EP2716596B1 true EP2716596B1 (fr) 2018-01-24

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US (1) US9308509B2 (fr)
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JP (1) JP5673816B2 (fr)
CN (1) CN103097285B (fr)
WO (1) WO2012165077A1 (fr)

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JPH0422827Y2 (fr) * 1987-09-25 1992-05-26
JPH03208803A (ja) 1990-01-12 1991-09-12 Mitsubishi Heavy Ind Ltd 水素原料改質装置
JPH0930801A (ja) * 1995-07-19 1997-02-04 Mitsubishi Electric Corp 改質反応器
JP3129670B2 (ja) * 1997-02-28 2001-01-31 三菱電機株式会社 燃料改質装置
DE10007764A1 (de) * 2000-02-20 2001-08-23 Gen Motors Corp Brennerelement
JP2002080203A (ja) * 2000-07-07 2002-03-19 Nippon Soken Inc 改質器
US6936364B2 (en) * 2001-10-24 2005-08-30 Modine Manufacturing Company Method and apparatus for vaporizing fuel for a reformer fuel cell system
US7014835B2 (en) 2002-08-15 2006-03-21 Velocys, Inc. Multi-stream microchannel device
CN1914118B (zh) * 2004-01-30 2010-08-11 出光兴产株式会社 改性器
JP2005298260A (ja) * 2004-04-09 2005-10-27 Nissan Motor Co Ltd 燃料改質システム
KR100639008B1 (ko) * 2005-04-13 2006-10-25 삼성에스디아이 주식회사 평판형 개질기 및 이를 채용한 연료 전지 시스템
US9101890B2 (en) * 2005-05-25 2015-08-11 Velocys, Inc. Support for use in microchannel processing
US8017088B2 (en) * 2005-09-27 2011-09-13 Samsung Sdi Co., Ltd. Fuel reformer
KR100898855B1 (ko) * 2006-07-21 2009-05-21 주식회사 엘지화학 열교환기를 포함한 마이크로 채널 개질 반응기
JP5611578B2 (ja) 2009-12-08 2014-10-22 Hoya株式会社 光学要素の位置制御装置

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Also Published As

Publication number Publication date
CN103097285A (zh) 2013-05-08
CN103097285B (zh) 2014-12-31
JPWO2012165077A1 (ja) 2015-02-23
US20130160364A1 (en) 2013-06-27
JP5673816B2 (ja) 2015-02-18
EP2716596A4 (fr) 2014-11-05
US9308509B2 (en) 2016-04-12
WO2012165077A1 (fr) 2012-12-06
EP2716596A1 (fr) 2014-04-09

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